Stephen Hawking thinks he knows what happened before the beginning of time

Neil deGrasse Tyson asks him to weigh in. Neil deGrasse Tyson’s show Star Talk is ending its fourth season with a bang—a big one. The big one, to be precise. The show, filmed at the American Museum of Natural History in New York City, features famous astrophysicist Tyson interviewing famous-for-things-other-than-physics folks through the lens of science.…